1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
#include <bits/stdc++.h>
using namespace std;
int main()
{   ios_base::sync_with_stdio(false);
cin.tie(NULL);
    vector<int> tab={0};
    int n;
    cin>>n;
    tab.resize(n+1);
    for(int i=0;i<n;i++){
        int a;
        cin>>a;
        tab[a]++;
        
        
    }
    sort(tab.begin(),tab.end(),greater<int>());
    int x=0,pointer=n;
    for(int i=0;i<=n;i++)
        {int y=tab[i];
        int z=tab[i];
        
        while((y&&pointer-i)){
            if(y>tab[pointer]&&z-tab[pointer]){
                y-=tab[pointer];
                tab[pointer]=0;
                pointer--;
            }
            else{
                tab[pointer]-=y-1;
                y=0;
            }
            
            
        }
            
            tab[i]=0;
           x++;
           if(!(pointer-i))
                {
                    cout<<x;
                    return 0;
                }
        }
        cout<<x;
    return 0;
}